This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 211 |
| 3 | 14221 |
| 4 | 636331 |
| 5 | 23679901 |
| 6 | 805351531 |
| 7 | 26175881341 |
| 8 | 831358677451 |
| 9 | 26094426008221 |
| 10 | 814105545191851 |
| 11 | 25320182311228861 |
| 12 | 786251347986776971 |
| 13 | 24394981288950302941 |
| 14 | 756583120577782494571 |
| 15 | 23459491617092461686781 |
| 16 | 727330825918603925122891 |